1241221225 has 12 divisors (see below), whose sum is σ = 1539634716. Its totient is φ = 992641280.

The previous prime is 1241221193. The next prime is 1241221231. The reversal of 1241221225 is 5221221421.

It can be written as a sum of positive squares in 6 ways, for example, as 316270656 + 924950569 = 17784^2 + 30413^2 .

It is not a de Polignac number, because 1241221225 - 2⁵ = 1241221193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1241221196 and 1241221205.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89349 + ... + 102301.

It is an arithmetic number, because the mean of its divisors is an integer number (128302893).

Almost surely, 2^1241221225 is an apocalyptic number.

It is an amenable number.

1241221225 is a deficient number, since it is larger than the sum of its proper divisors (298413491).

1241221225 is a wasteful number, since it uses less digits than its factorization.

1241221225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16796 (or 16791 counting only the distinct ones).

The product of its digits is 640, while the sum is 22.

The square root of 1241221225 is about 35230.9696857750. The cubic root of 1241221225 is about 1074.6896454005.

Adding to 1241221225 its reverse (5221221421), we get a palindrome (6462442646).

The spelling of 1241221225 in words is "one billion, two hundred forty-one million, two hundred twenty-one thousand, two hundred twenty-five".